On August, 28, 2018, Unit 2 of the Sanmen nuclear power plant in China's Zhejiang province has been connected to the electricity grid and has begun supplying power. In late-June, Sanmen 1 became the world's first AP1000 to achieve grid connection and power generation.

Sanmen 2 was connected to the grid at 5:22pm and the unit will now undergo gradual power ascension testing until all testing is safely and successfully completed at 100% power. On completion of these tests, the utility will then seek approval for commercial operation of the unit.

Unit 1 of the Haiyang plant attained first criticality on 8 August and was grid connected on 17 August. Haiyang 2 is expected to start up in 2019.